[Vendor] blevesearch v0.8.1 -> v1.0.7 (#11360)

* Update blevesearch v0.8.1 -> v1.0.7

* make vendor

Co-authored-by: zeripath <art27@cantab.net>

28 files changed, 386 insertions, 133 deletions

diff --git a/vendor/google.golang.org/protobuf/encoding/prototext/encode.go b/vendor/google.golang.org/protobuf/encoding/prototext/encode.go
index 83b65a6661..e207c69249 100644
--- a/vendor/google.golang.org/protobuf/encoding/prototext/encode.go
+++ b/vendor/google.golang.org/protobuf/encoding/prototext/encode.go
@@ -106,6 +106,12 @@ func (o MarshalOptions) Marshal(m proto.Message) ([]byte, error) {
 		return nil, err
 	}
 
+	// Treat nil message interface as an empty message,
+	// in which case there is nothing to output.
+	if m == nil {
+		return []byte{}, nil
+	}
+
 	enc := encoder{internalEnc, o}
 	err = enc.marshalMessage(m.ProtoReflect(), false)
 	if err != nil {
diff --git a/vendor/google.golang.org/protobuf/internal/descfmt/stringer.go b/vendor/google.golang.org/protobuf/internal/descfmt/stringer.go
index 4cb8d6dfd4..e7af0fe0de 100644
--- a/vendor/google.golang.org/protobuf/internal/descfmt/stringer.go
+++ b/vendor/google.golang.org/protobuf/internal/descfmt/stringer.go
@@ -106,7 +106,7 @@ func formatListOpt(vs list, isRoot, allowMulti bool) string {
 var descriptorAccessors = map[reflect.Type][]string{
 	reflect.TypeOf((*pref.FileDescriptor)(nil)).Elem():      {"Path", "Package", "Imports", "Messages", "Enums", "Extensions", "Services"},
 	reflect.TypeOf((*pref.MessageDescriptor)(nil)).Elem():   {"IsMapEntry", "Fields", "Oneofs", "ReservedNames", "ReservedRanges", "RequiredNumbers", "ExtensionRanges", "Messages", "Enums", "Extensions"},
-	reflect.TypeOf((*pref.FieldDescriptor)(nil)).Elem():     {"Number", "Cardinality", "Kind", "HasJSONName", "JSONName", "IsPacked", "IsExtension", "IsWeak", "IsList", "IsMap", "MapKey", "MapValue", "HasDefault", "Default", "ContainingOneof", "ContainingMessage", "Message", "Enum"},
+	reflect.TypeOf((*pref.FieldDescriptor)(nil)).Elem():     {"Number", "Cardinality", "Kind", "HasJSONName", "JSONName", "HasPresence", "IsExtension", "IsPacked", "IsWeak", "IsList", "IsMap", "MapKey", "MapValue", "HasDefault", "Default", "ContainingOneof", "ContainingMessage", "Message", "Enum"},
 	reflect.TypeOf((*pref.OneofDescriptor)(nil)).Elem():     {"Fields"}, // not directly used; must keep in sync with formatDescOpt
 	reflect.TypeOf((*pref.EnumDescriptor)(nil)).Elem():      {"Values", "ReservedNames", "ReservedRanges"},
 	reflect.TypeOf((*pref.EnumValueDescriptor)(nil)).Elem(): {"Number"},
diff --git a/vendor/google.golang.org/protobuf/internal/fieldnum/descriptor_gen.go b/vendor/google.golang.org/protobuf/internal/fieldnum/descriptor_gen.go
index 1629515493..6e37b59e92 100644
--- a/vendor/google.golang.org/protobuf/internal/fieldnum/descriptor_gen.go
+++ b/vendor/google.golang.org/protobuf/internal/fieldnum/descriptor_gen.go
@@ -61,16 +61,17 @@ const (
 
 // Field numbers for google.protobuf.FieldDescriptorProto.
 const (
-	FieldDescriptorProto_Name         = 1  // optional string
-	FieldDescriptorProto_Number       = 3  // optional int32
-	FieldDescriptorProto_Label        = 4  // optional google.protobuf.FieldDescriptorProto.Label
-	FieldDescriptorProto_Type         = 5  // optional google.protobuf.FieldDescriptorProto.Type
-	FieldDescriptorProto_TypeName     = 6  // optional string
-	FieldDescriptorProto_Extendee     = 2  // optional string
-	FieldDescriptorProto_DefaultValue = 7  // optional string
-	FieldDescriptorProto_OneofIndex   = 9  // optional int32
-	FieldDescriptorProto_JsonName     = 10 // optional string
-	FieldDescriptorProto_Options      = 8  // optional google.protobuf.FieldOptions
+	FieldDescriptorProto_Name           = 1  // optional string
+	FieldDescriptorProto_Number         = 3  // optional int32
+	FieldDescriptorProto_Label          = 4  // optional google.protobuf.FieldDescriptorProto.Label
+	FieldDescriptorProto_Type           = 5  // optional google.protobuf.FieldDescriptorProto.Type
+	FieldDescriptorProto_TypeName       = 6  // optional string
+	FieldDescriptorProto_Extendee       = 2  // optional string
+	FieldDescriptorProto_DefaultValue   = 7  // optional string
+	FieldDescriptorProto_OneofIndex     = 9  // optional int32
+	FieldDescriptorProto_JsonName       = 10 // optional string
+	FieldDescriptorProto_Options        = 8  // optional google.protobuf.FieldOptions
+	FieldDescriptorProto_Proto3Optional = 17 // optional bool
 )
 
 // Field numbers for google.protobuf.OneofDescriptorProto.
diff --git a/vendor/google.golang.org/protobuf/internal/fieldsort/fieldsort.go b/vendor/google.golang.org/protobuf/internal/fieldsort/fieldsort.go
index 1cb2d74fc6..517c4e2a04 100644
--- a/vendor/google.golang.org/protobuf/internal/fieldsort/fieldsort.go
+++ b/vendor/google.golang.org/protobuf/internal/fieldsort/fieldsort.go
@@ -30,9 +30,9 @@ func Less(a, b protoreflect.FieldDescriptor) bool {
 			return a.Number() < b.Number()
 		}
 		return oa.Index() < ob.Index()
-	case oa != nil:
+	case oa != nil && !oa.IsSynthetic():
 		return false
-	case ob != nil:
+	case ob != nil && !ob.IsSynthetic():
 		return true
 	default:
 		return a.Number() < b.Number()
diff --git a/vendor/google.golang.org/protobuf/internal/filedesc/desc.go b/vendor/google.golang.org/protobuf/internal/filedesc/desc.go
index a9fe07c216..13b7723c6c 100644
--- a/vendor/google.golang.org/protobuf/internal/filedesc/desc.go
+++ b/vendor/google.golang.org/protobuf/internal/filedesc/desc.go
@@ -77,7 +77,7 @@ func (fd *File) Enums() pref.EnumDescriptors           { return &fd.L1.Enums }
 func (fd *File) Messages() pref.MessageDescriptors     { return &fd.L1.Messages }
 func (fd *File) Extensions() pref.ExtensionDescriptors { return &fd.L1.Extensions }
 func (fd *File) Services() pref.ServiceDescriptors     { return &fd.L1.Services }
-func (fd *File) SourceLocations() pref.SourceLocations { return &fd.L2.Locations }
+func (fd *File) SourceLocations() pref.SourceLocations { return &fd.lazyInit().Locations }
 func (fd *File) Format(s fmt.State, r rune)            { descfmt.FormatDesc(s, r, fd) }
 func (fd *File) ProtoType(pref.FileDescriptor)         {}
 func (fd *File) ProtoInternal(pragma.DoNotImplement)   {}
@@ -202,20 +202,21 @@ type (
 		L1 FieldL1
 	}
 	FieldL1 struct {
-		Options         func() pref.ProtoMessage
-		Number          pref.FieldNumber
-		Cardinality     pref.Cardinality // must be consistent with Message.RequiredNumbers
-		Kind            pref.Kind
-		JSONName        jsonName
-		IsWeak          bool // promoted from google.protobuf.FieldOptions
-		HasPacked       bool // promoted from google.protobuf.FieldOptions
-		IsPacked        bool // promoted from google.protobuf.FieldOptions
-		HasEnforceUTF8  bool // promoted from google.protobuf.FieldOptions
-		EnforceUTF8     bool // promoted from google.protobuf.FieldOptions
-		Default         defaultValue
-		ContainingOneof pref.OneofDescriptor // must be consistent with Message.Oneofs.Fields
-		Enum            pref.EnumDescriptor
-		Message         pref.MessageDescriptor
+		Options          func() pref.ProtoMessage
+		Number           pref.FieldNumber
+		Cardinality      pref.Cardinality // must be consistent with Message.RequiredNumbers
+		Kind             pref.Kind
+		JSONName         jsonName
+		IsProto3Optional bool // promoted from google.protobuf.FieldDescriptorProto
+		IsWeak           bool // promoted from google.protobuf.FieldOptions
+		HasPacked        bool // promoted from google.protobuf.FieldOptions
+		IsPacked         bool // promoted from google.protobuf.FieldOptions
+		HasEnforceUTF8   bool // promoted from google.protobuf.FieldOptions
+		EnforceUTF8      bool // promoted from google.protobuf.FieldOptions
+		Default          defaultValue
+		ContainingOneof  pref.OneofDescriptor // must be consistent with Message.Oneofs.Fields
+		Enum             pref.EnumDescriptor
+		Message          pref.MessageDescriptor
 	}
 
 	Oneof struct {
@@ -277,6 +278,12 @@ func (fd *Field) Cardinality() pref.Cardinality { return fd.L1.Cardinality }
 func (fd *Field) Kind() pref.Kind               { return fd.L1.Kind }
 func (fd *Field) HasJSONName() bool             { return fd.L1.JSONName.has }
 func (fd *Field) JSONName() string              { return fd.L1.JSONName.get(fd) }
+func (fd *Field) HasPresence() bool {
+	return fd.L1.Cardinality != pref.Repeated && (fd.L0.ParentFile.L1.Syntax == pref.Proto2 || fd.L1.Message != nil || fd.L1.ContainingOneof != nil)
+}
+func (fd *Field) HasOptionalKeyword() bool {
+	return (fd.L0.ParentFile.L1.Syntax == pref.Proto2 && fd.L1.Cardinality == pref.Optional && fd.L1.ContainingOneof == nil) || fd.L1.IsProto3Optional
+}
 func (fd *Field) IsPacked() bool {
 	if !fd.L1.HasPacked && fd.L0.ParentFile.L1.Syntax != pref.Proto2 && fd.L1.Cardinality == pref.Repeated {
 		switch fd.L1.Kind {
@@ -338,6 +345,9 @@ func (fd *Field) EnforceUTF8() bool {
 	return fd.L0.ParentFile.L1.Syntax == pref.Proto3
 }
 
+func (od *Oneof) IsSynthetic() bool {
+	return od.L0.ParentFile.L1.Syntax == pref.Proto3 && len(od.L1.Fields.List) == 1 && od.L1.Fields.List[0].HasOptionalKeyword()
+}
 func (od *Oneof) Options() pref.ProtoMessage {
 	if f := od.L1.Options; f != nil {
 		return f()
@@ -361,12 +371,13 @@ type (
 		Kind        pref.Kind
 	}
 	ExtensionL2 struct {
-		Options  func() pref.ProtoMessage
-		JSONName jsonName
-		IsPacked bool // promoted from google.protobuf.FieldOptions
-		Default  defaultValue
-		Enum     pref.EnumDescriptor
-		Message  pref.MessageDescriptor
+		Options          func() pref.ProtoMessage
+		JSONName         jsonName
+		IsProto3Optional bool // promoted from google.protobuf.FieldDescriptorProto
+		IsPacked         bool // promoted from google.protobuf.FieldOptions
+		Default          defaultValue
+		Enum             pref.EnumDescriptor
+		Message          pref.MessageDescriptor
 	}
 )
 
@@ -376,11 +387,15 @@ func (xd *Extension) Options() pref.ProtoMessage {
 	}
 	return descopts.Field
 }
-func (xd *Extension) Number() pref.FieldNumber                   { return xd.L1.Number }
-func (xd *Extension) Cardinality() pref.Cardinality              { return xd.L1.Cardinality }
-func (xd *Extension) Kind() pref.Kind                            { return xd.L1.Kind }
-func (xd *Extension) HasJSONName() bool                          { return xd.lazyInit().JSONName.has }
-func (xd *Extension) JSONName() string                           { return xd.lazyInit().JSONName.get(xd) }
+func (xd *Extension) Number() pref.FieldNumber      { return xd.L1.Number }
+func (xd *Extension) Cardinality() pref.Cardinality { return xd.L1.Cardinality }
+func (xd *Extension) Kind() pref.Kind               { return xd.L1.Kind }
+func (xd *Extension) HasJSONName() bool             { return xd.lazyInit().JSONName.has }
+func (xd *Extension) JSONName() string              { return xd.lazyInit().JSONName.get(xd) }
+func (xd *Extension) HasPresence() bool             { return xd.L1.Cardinality != pref.Repeated }
+func (xd *Extension) HasOptionalKeyword() bool {
+	return (xd.L0.ParentFile.L1.Syntax == pref.Proto2 && xd.L1.Cardinality == pref.Optional) || xd.lazyInit().IsProto3Optional
+}
 func (xd *Extension) IsPacked() bool                             { return xd.lazyInit().IsPacked }
 func (xd *Extension) IsExtension() bool                          { return true }
 func (xd *Extension) IsWeak() bool                               { return false }
diff --git a/vendor/google.golang.org/protobuf/internal/filedesc/desc_lazy.go b/vendor/google.golang.org/protobuf/internal/filedesc/desc_lazy.go
index cdf3164686..bc215944a3 100644
--- a/vendor/google.golang.org/protobuf/internal/filedesc/desc_lazy.go
+++ b/vendor/google.golang.org/protobuf/internal/filedesc/desc_lazy.go
@@ -441,6 +441,8 @@ func (fd *Field) unmarshalFull(b []byte, sb *strs.Builder, pf *File, pd pref.Des
 					panic("oneof type already set")
 				}
 				fd.L1.ContainingOneof = od
+			case fieldnum.FieldDescriptorProto_Proto3Optional:
+				fd.L1.IsProto3Optional = protowire.DecodeBool(v)
 			}
 		case protowire.BytesType:
 			v, m := protowire.ConsumeBytes(b)
@@ -537,6 +539,13 @@ func (xd *Extension) unmarshalFull(b []byte, sb *strs.Builder) {
 		num, typ, n := protowire.ConsumeTag(b)
 		b = b[n:]
 		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.FieldDescriptorProto_Proto3Optional:
+				xd.L2.IsProto3Optional = protowire.DecodeBool(v)
+			}
 		case protowire.BytesType:
 			v, m := protowire.ConsumeBytes(b)
 			b = b[m:]
diff --git a/vendor/google.golang.org/protobuf/internal/impl/codec_gen.go b/vendor/google.golang.org/protobuf/internal/impl/codec_gen.go
index 2c43b11734..ff198d0a15 100644
--- a/vendor/google.golang.org/protobuf/internal/impl/codec_gen.go
+++ b/vendor/google.golang.org/protobuf/internal/impl/codec_gen.go
@@ -5078,6 +5078,46 @@ var coderStringPtr = pointerCoderFuncs{
 	merge:     mergeStringPtr,
 }
 
+// appendStringPtrValidateUTF8 wire encodes a *string pointer as a String.
+// It panics if the pointer is nil.
+func appendStringPtrValidateUTF8(b []byte, p pointer, f *coderFieldInfo, _ marshalOptions) ([]byte, error) {
+	v := **p.StringPtr()
+	b = protowire.AppendVarint(b, f.wiretag)
+	b = protowire.AppendString(b, v)
+	if !utf8.ValidString(v) {
+		return b, errInvalidUTF8{}
+	}
+	return b, nil
+}
+
+// consumeStringPtrValidateUTF8 wire decodes a *string pointer as a String.
+func consumeStringPtrValidateUTF8(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, _ unmarshalOptions) (out unmarshalOutput, err error) {
+	if wtyp != protowire.BytesType {
+		return out, errUnknown
+	}
+	v, n := protowire.ConsumeString(b)
+	if n < 0 {
+		return out, protowire.ParseError(n)
+	}
+	if !utf8.ValidString(v) {
+		return out, errInvalidUTF8{}
+	}
+	vp := p.StringPtr()
+	if *vp == nil {
+		*vp = new(string)
+	}
+	**vp = v
+	out.n = n
+	return out, nil
+}
+
+var coderStringPtrValidateUTF8 = pointerCoderFuncs{
+	size:      sizeStringPtr,
+	marshal:   appendStringPtrValidateUTF8,
+	unmarshal: consumeStringPtrValidateUTF8,
+	merge:     mergeStringPtr,
+}
+
 // sizeStringSlice returns the size of wire encoding a []string pointer as a repeated String.
 func sizeStringSlice(p pointer, f *coderFieldInfo, _ marshalOptions) (size int) {
 	s := *p.StringSlice()
diff --git a/vendor/google.golang.org/protobuf/internal/impl/codec_message.go b/vendor/google.golang.org/protobuf/internal/impl/codec_message.go
index 370ec65a20..29ed59b445 100644
--- a/vendor/google.golang.org/protobuf/internal/impl/codec_message.go
+++ b/vendor/google.golang.org/protobuf/internal/impl/codec_message.go
@@ -31,6 +31,11 @@ type coderMessageInfo struct {
 	needsInitCheck     bool
 	isMessageSet       bool
 	numRequiredFields  uint8
+
+	// Include space for a number of coderFieldInfos to improve cache locality.
+	// The number of entries is chosen through a combination of guesswork and
+	// empirical testing.
+	coderFieldBuf [32]coderFieldInfo
 }
 
 type coderFieldInfo struct {
@@ -53,11 +58,13 @@ func (mi *MessageInfo) makeCoderMethods(t reflect.Type, si structInfo) {
 
 	mi.coderFields = make(map[protowire.Number]*coderFieldInfo)
 	fields := mi.Desc.Fields()
+	preallocFields := mi.coderFieldBuf[:]
 	for i := 0; i < fields.Len(); i++ {
 		fd := fields.Get(i)
 
 		fs := si.fieldsByNumber[fd.Number()]
-		if fd.ContainingOneof() != nil {
+		isOneof := fd.ContainingOneof() != nil && !fd.ContainingOneof().IsSynthetic()
+		if isOneof {
 			fs = si.oneofsByName[fd.ContainingOneof().Name()]
 		}
 		ft := fs.Type
@@ -71,7 +78,7 @@ func (mi *MessageInfo) makeCoderMethods(t reflect.Type, si structInfo) {
 		var funcs pointerCoderFuncs
 		var childMessage *MessageInfo
 		switch {
-		case fd.ContainingOneof() != nil:
+		case isOneof:
 			fieldOffset = offsetOf(fs, mi.Exporter)
 		case fd.IsWeak():
 			fieldOffset = si.weakOffset
@@ -80,7 +87,14 @@ func (mi *MessageInfo) makeCoderMethods(t reflect.Type, si structInfo) {
 			fieldOffset = offsetOf(fs, mi.Exporter)
 			childMessage, funcs = fieldCoder(fd, ft)
 		}
-		cf := &coderFieldInfo{
+		var cf *coderFieldInfo
+		if len(preallocFields) > 0 {
+			cf = &preallocFields[0]
+			preallocFields = preallocFields[1:]
+		} else {
+			cf = new(coderFieldInfo)
+		}
+		*cf = coderFieldInfo{
 			num:        fd.Number(),
 			offset:     fieldOffset,
 			wiretag:    wiretag,
@@ -89,17 +103,16 @@ func (mi *MessageInfo) makeCoderMethods(t reflect.Type, si structInfo) {
 			funcs:      funcs,
 			mi:         childMessage,
 			validation: newFieldValidationInfo(mi, si, fd, ft),
-			isPointer: (fd.Cardinality() == pref.Repeated ||
-				fd.Kind() == pref.MessageKind ||
-				fd.Kind() == pref.GroupKind ||
-				fd.Syntax() != pref.Proto3),
+			isPointer:  fd.Cardinality() == pref.Repeated || fd.HasPresence(),
 			isRequired: fd.Cardinality() == pref.Required,
 		}
 		mi.orderedCoderFields = append(mi.orderedCoderFields, cf)
 		mi.coderFields[cf.num] = cf
 	}
 	for i, oneofs := 0, mi.Desc.Oneofs(); i < oneofs.Len(); i++ {
-		mi.initOneofFieldCoders(oneofs.Get(i), si)
+		if od := oneofs.Get(i); !od.IsSynthetic() {
+			mi.initOneofFieldCoders(od, si)
+		}
 	}
 	if messageset.IsMessageSet(mi.Desc) {
 		if !mi.extensionOffset.IsValid() {
@@ -123,7 +136,7 @@ func (mi *MessageInfo) makeCoderMethods(t reflect.Type, si structInfo) {
 	}
 	mi.denseCoderFields = make([]*coderFieldInfo, maxDense+1)
 	for _, cf := range mi.orderedCoderFields {
-		if int(cf.num) > len(mi.denseCoderFields) {
+		if int(cf.num) >= len(mi.denseCoderFields) {
 			break
 		}
 		mi.denseCoderFields[cf.num] = cf
diff --git a/vendor/google.golang.org/protobuf/internal/impl/codec_tables.go b/vendor/google.golang.org/protobuf/internal/impl/codec_tables.go
index c934c8d3ca..e899712388 100644
--- a/vendor/google.golang.org/protobuf/internal/impl/codec_tables.go
+++ b/vendor/google.golang.org/protobuf/internal/impl/codec_tables.go
@@ -338,6 +338,9 @@ func fieldCoder(fd pref.FieldDescriptor, ft reflect.Type) (*MessageInfo, pointer
 				return nil, coderDoublePtr
 			}
 		case pref.StringKind:
+			if ft.Kind() == reflect.String && strs.EnforceUTF8(fd) {
+				return nil, coderStringPtrValidateUTF8
+			}
 			if ft.Kind() == reflect.String {
 				return nil, coderStringPtr
 			}
diff --git a/vendor/google.golang.org/protobuf/internal/impl/convert.go b/vendor/google.golang.org/protobuf/internal/impl/convert.go
index 9fc384a7a5..36a90dff38 100644
--- a/vendor/google.golang.org/protobuf/internal/impl/convert.go
+++ b/vendor/google.golang.org/protobuf/internal/impl/convert.go
@@ -162,7 +162,7 @@ func (c *boolConverter) IsValidPB(v pref.Value) bool {
 	return ok
 }
 func (c *boolConverter) IsValidGo(v reflect.Value) bool {
-	return v.Type() == c.goType
+	return v.IsValid() && v.Type() == c.goType
 }
 func (c *boolConverter) New() pref.Value  { return c.def }
 func (c *boolConverter) Zero() pref.Value { return c.def }
@@ -186,7 +186,7 @@ func (c *int32Converter) IsValidPB(v pref.Value) bool {
 	return ok
 }
 func (c *int32Converter) IsValidGo(v reflect.Value) bool {
-	return v.Type() == c.goType
+	return v.IsValid() && v.Type() == c.goType
 }
 func (c *int32Converter) New() pref.Value  { return c.def }
 func (c *int32Converter) Zero() pref.Value { return c.def }
@@ -210,7 +210,7 @@ func (c *int64Converter) IsValidPB(v pref.Value) bool {
 	return ok
 }
 func (c *int64Converter) IsValidGo(v reflect.Value) bool {
-	return v.Type() == c.goType
+	return v.IsValid() && v.Type() == c.goType
 }
 func (c *int64Converter) New() pref.Value  { return c.def }
 func (c *int64Converter) Zero() pref.Value { return c.def }
@@ -234,7 +234,7 @@ func (c *uint32Converter) IsValidPB(v pref.Value) bool {
 	return ok
 }
 func (c *uint32Converter) IsValidGo(v reflect.Value) bool {
-	return v.Type() == c.goType
+	return v.IsValid() && v.Type() == c.goType
 }
 func (c *uint32Converter) New() pref.Value  { return c.def }
 func (c *uint32Converter) Zero() pref.Value { return c.def }
@@ -258,7 +258,7 @@ func (c *uint64Converter) IsValidPB(v pref.Value) bool {
 	return ok
 }
 func (c *uint64Converter) IsValidGo(v reflect.Value) bool {
-	return v.Type() == c.goType
+	return v.IsValid() && v.Type() == c.goType
 }
 func (c *uint64Converter) New() pref.Value  { return c.def }
 func (c *uint64Converter) Zero() pref.Value { return c.def }
@@ -282,7 +282,7 @@ func (c *float32Converter) IsValidPB(v pref.Value) bool {
 	return ok
 }
 func (c *float32Converter) IsValidGo(v reflect.Value) bool {
-	return v.Type() == c.goType
+	return v.IsValid() && v.Type() == c.goType
 }
 func (c *float32Converter) New() pref.Value  { return c.def }
 func (c *float32Converter) Zero() pref.Value { return c.def }
@@ -306,7 +306,7 @@ func (c *float64Converter) IsValidPB(v pref.Value) bool {
 	return ok
 }
 func (c *float64Converter) IsValidGo(v reflect.Value) bool {
-	return v.Type() == c.goType
+	return v.IsValid() && v.Type() == c.goType
 }
 func (c *float64Converter) New() pref.Value  { return c.def }
 func (c *float64Converter) Zero() pref.Value { return c.def }
@@ -336,7 +336,7 @@ func (c *stringConverter) IsValidPB(v pref.Value) bool {
 	return ok
 }
 func (c *stringConverter) IsValidGo(v reflect.Value) bool {
-	return v.Type() == c.goType
+	return v.IsValid() && v.Type() == c.goType
 }
 func (c *stringConverter) New() pref.Value  { return c.def }
 func (c *stringConverter) Zero() pref.Value { return c.def }
@@ -363,7 +363,7 @@ func (c *bytesConverter) IsValidPB(v pref.Value) bool {
 	return ok
 }
 func (c *bytesConverter) IsValidGo(v reflect.Value) bool {
-	return v.Type() == c.goType
+	return v.IsValid() && v.Type() == c.goType
 }
 func (c *bytesConverter) New() pref.Value  { return c.def }
 func (c *bytesConverter) Zero() pref.Value { return c.def }
@@ -400,7 +400,7 @@ func (c *enumConverter) IsValidPB(v pref.Value) bool {
 }
 
 func (c *enumConverter) IsValidGo(v reflect.Value) bool {
-	return v.Type() == c.goType
+	return v.IsValid() && v.Type() == c.goType
 }
 
 func (c *enumConverter) New() pref.Value {
@@ -455,7 +455,7 @@ func (c *messageConverter) IsValidPB(v pref.Value) bool {
 }
 
 func (c *messageConverter) IsValidGo(v reflect.Value) bool {
-	return v.Type() == c.goType
+	return v.IsValid() && v.Type() == c.goType
 }
 
 func (c *messageConverter) New() pref.Value {
diff --git a/vendor/google.golang.org/protobuf/internal/impl/convert_list.go b/vendor/google.golang.org/protobuf/internal/impl/convert_list.go
index fe9384aba3..6fccab520e 100644
--- a/vendor/google.golang.org/protobuf/internal/impl/convert_list.go
+++ b/vendor/google.golang.org/protobuf/internal/impl/convert_list.go
@@ -22,7 +22,7 @@ func newListConverter(t reflect.Type, fd pref.FieldDescriptor) Converter {
 }
 
 type listConverter struct {
-	goType reflect.Type
+	goType reflect.Type // []T
 	c      Converter
 }
 
@@ -48,11 +48,11 @@ func (c *listConverter) IsValidPB(v pref.Value) bool {
 	if !ok {
 		return false
 	}
-	return list.v.Type().Elem() == c.goType && list.IsValid()
+	return list.v.Type().Elem() == c.goType
 }
 
 func (c *listConverter) IsValidGo(v reflect.Value) bool {
-	return v.Type() == c.goType
+	return v.IsValid() && v.Type() == c.goType
 }
 
 func (c *listConverter) New() pref.Value {
@@ -64,7 +64,7 @@ func (c *listConverter) Zero() pref.Value {
 }
 
 type listPtrConverter struct {
-	goType reflect.Type
+	goType reflect.Type // *[]T
 	c      Converter
 }
 
@@ -88,7 +88,7 @@ func (c *listPtrConverter) IsValidPB(v pref.Value) bool {
 }
 
 func (c *listPtrConverter) IsValidGo(v reflect.Value) bool {
-	return v.Type() == c.goType
+	return v.IsValid() && v.Type() == c.goType
 }
 
 func (c *listPtrConverter) New() pref.Value {
diff --git a/vendor/google.golang.org/protobuf/internal/impl/convert_map.go b/vendor/google.golang.org/protobuf/internal/impl/convert_map.go
index 3ef36d3f23..de06b2593f 100644
--- a/vendor/google.golang.org/protobuf/internal/impl/convert_map.go
+++ b/vendor/google.golang.org/protobuf/internal/impl/convert_map.go
@@ -12,7 +12,7 @@ import (
 )
 
 type mapConverter struct {
-	goType           reflect.Type
+	goType           reflect.Type // map[K]V
 	keyConv, valConv Converter
 }
 
@@ -43,11 +43,11 @@ func (c *mapConverter) IsValidPB(v pref.Value) bool {
 	if !ok {
 		return false
 	}
-	return mapv.v.Type() == c.goType && mapv.IsValid()
+	return mapv.v.Type() == c.goType
 }
 
 func (c *mapConverter) IsValidGo(v reflect.Value) bool {
-	return v.Type() == c.goType
+	return v.IsValid() && v.Type() == c.goType
 }
 
 func (c *mapConverter) New() pref.Value {
diff --git a/vendor/google.golang.org/protobuf/internal/impl/legacy_export.go b/vendor/google.golang.org/protobuf/internal/impl/legacy_export.go
index 94f45725f0..c3d741c2f0 100644
--- a/vendor/google.golang.org/protobuf/internal/impl/legacy_export.go
+++ b/vendor/google.golang.org/protobuf/internal/impl/legacy_export.go
@@ -7,14 +7,12 @@ package impl
 import (
 	"encoding/binary"
 	"encoding/json"
-	"fmt"
 	"hash/crc32"
 	"math"
 	"reflect"
 
 	"google.golang.org/protobuf/internal/errors"
 	pref "google.golang.org/protobuf/reflect/protoreflect"
-	"google.golang.org/protobuf/reflect/protoregistry"
 	piface "google.golang.org/protobuf/runtime/protoiface"
 )
 
@@ -92,13 +90,3 @@ func (Export) CompressGZIP(in []byte) (out []byte) {
 	out = append(out, gzipFooter[:]...)
 	return out
 }
-
-// WeakNil returns a typed nil pointer to a concrete message.
-// It panics if the message is not linked into the binary.
-func (Export) WeakNil(s pref.FullName) piface.MessageV1 {
-	mt, err := protoregistry.GlobalTypes.FindMessageByName(s)
-	if err != nil {
-		panic(fmt.Sprintf("weak message %v is not linked in", s))
-	}
-	return mt.Zero().Interface().(piface.MessageV1)
-}
diff --git a/vendor/google.golang.org/protobuf/internal/impl/legacy_extension.go b/vendor/google.golang.org/protobuf/internal/impl/legacy_extension.go
index 93c318f9ea..61757ce50a 100644
--- a/vendor/google.golang.org/protobuf/internal/impl/legacy_extension.go
+++ b/vendor/google.golang.org/protobuf/internal/impl/legacy_extension.go
@@ -155,6 +155,8 @@ func (x placeholderExtension) Cardinality() pref.Cardinality              { retu
 func (x placeholderExtension) Kind() pref.Kind                            { return 0 }
 func (x placeholderExtension) HasJSONName() bool                          { return false }
 func (x placeholderExtension) JSONName() string                           { return "" }
+func (x placeholderExtension) HasPresence() bool                          { return false }
+func (x placeholderExtension) HasOptionalKeyword() bool                   { return false }
 func (x placeholderExtension) IsExtension() bool                          { return true }
 func (x placeholderExtension) IsWeak() bool                               { return false }
 func (x placeholderExtension) IsPacked() bool                             { return false }
diff --git a/vendor/google.golang.org/protobuf/internal/impl/message.go b/vendor/google.golang.org/protobuf/internal/impl/message.go
index c1d890233c..7dd994bd95 100644
--- a/vendor/google.golang.org/protobuf/internal/impl/message.go
+++ b/vendor/google.golang.org/protobuf/internal/impl/message.go
@@ -15,7 +15,6 @@ import (
 	"google.golang.org/protobuf/internal/genname"
 	"google.golang.org/protobuf/reflect/protoreflect"
 	pref "google.golang.org/protobuf/reflect/protoreflect"
-	piface "google.golang.org/protobuf/runtime/protoiface"
 )
 
 // MessageInfo provides protobuf related functionality for a given Go type
@@ -109,7 +108,7 @@ func (mi *MessageInfo) getPointer(m pref.Message) (p pointer, ok bool) {
 
 type (
 	SizeCache       = int32
-	WeakFields      = map[int32]piface.MessageV1
+	WeakFields      = map[int32]protoreflect.ProtoMessage
 	UnknownFields   = []byte
 	ExtensionFields = map[int32]ExtensionField
 )
diff --git a/vendor/google.golang.org/protobuf/internal/impl/message_reflect.go b/vendor/google.golang.org/protobuf/internal/impl/message_reflect.go
index aac55ee8d8..3eb2b1390f 100644
--- a/vendor/google.golang.org/protobuf/internal/impl/message_reflect.go
+++ b/vendor/google.golang.org/protobuf/internal/impl/message_reflect.go
@@ -53,7 +53,7 @@ func (mi *MessageInfo) makeKnownFieldsFunc(si structInfo) {
 		fs := si.fieldsByNumber[fd.Number()]
 		var fi fieldInfo
 		switch {
-		case fd.ContainingOneof() != nil:
+		case fd.ContainingOneof() != nil && !fd.ContainingOneof().IsSynthetic():
 			fi = fieldInfoForOneof(fd, si.oneofsByName[fd.ContainingOneof().Name()], mi.Exporter, si.oneofWrappersByNumber[fd.Number()])
 		case fd.IsMap():
 			fi = fieldInfoForMap(fd, fs, mi.Exporter)
@@ -72,7 +72,7 @@ func (mi *MessageInfo) makeKnownFieldsFunc(si structInfo) {
 	mi.oneofs = map[pref.Name]*oneofInfo{}
 	for i := 0; i < md.Oneofs().Len(); i++ {
 		od := md.Oneofs().Get(i)
-		mi.oneofs[od.Name()] = makeOneofInfo(od, si.oneofsByName[od.Name()], mi.Exporter, si.oneofWrappersByType)
+		mi.oneofs[od.Name()] = makeOneofInfo(od, si, mi.Exporter)
 	}
 
 	mi.denseFields = make([]*fieldInfo, fds.Len()*2)
@@ -84,7 +84,7 @@ func (mi *MessageInfo) makeKnownFieldsFunc(si structInfo) {
 
 	for i := 0; i < fds.Len(); {
 		fd := fds.Get(i)
-		if od := fd.ContainingOneof(); od != nil {
+		if od := fd.ContainingOneof(); od != nil && !od.IsSynthetic() {
 			mi.rangeInfos = append(mi.rangeInfos, mi.oneofs[od.Name()])
 			i += od.Fields().Len()
 		} else {
@@ -170,6 +170,8 @@ func (m *extensionMap) Has(xt pref.ExtensionType) (ok bool) {
 		return x.Value().List().Len() > 0
 	case xd.IsMap():
 		return x.Value().Map().Len() > 0
+	case xd.Message() != nil:
+		return x.Value().Message().IsValid()
 	}
 	return true
 }
@@ -186,15 +188,28 @@ func (m *extensionMap) Get(xt pref.ExtensionType) pref.Value {
 	return xt.Zero()
 }
 func (m *extensionMap) Set(xt pref.ExtensionType, v pref.Value) {
-	if !xt.IsValidValue(v) {
+	xd := xt.TypeDescriptor()
+	isValid := true
+	switch {
+	case !xt.IsValidValue(v):
+		isValid = false
+	case xd.IsList():
+		isValid = v.List().IsValid()
+	case xd.IsMap():
+		isValid = v.Map().IsValid()
+	case xd.Message() != nil:
+		isValid = v.Message().IsValid()
+	}
+	if !isValid {
 		panic(fmt.Sprintf("%v: assigning invalid value", xt.TypeDescriptor().FullName()))
 	}
+
 	if *m == nil {
 		*m = make(map[int32]ExtensionField)
 	}
 	var x ExtensionField
 	x.Set(xt, v)
-	(*m)[int32(xt.TypeDescriptor().Number())] = x
+	(*m)[int32(xd.Number())] = x
 }
 func (m *extensionMap) Mutable(xt pref.ExtensionType) pref.Value {
 	xd := xt.TypeDescriptor()
diff --git a/vendor/google.golang.org/protobuf/internal/impl/message_reflect_field.go b/vendor/google.golang.org/protobuf/internal/impl/message_reflect_field.go
index 7b87d4712f..ea6f75548a 100644
--- a/vendor/google.golang.org/protobuf/internal/impl/message_reflect_field.go
+++ b/vendor/google.golang.org/protobuf/internal/impl/message_reflect_field.go
@@ -221,7 +221,7 @@ var (
 
 func fieldInfoForScalar(fd pref.FieldDescriptor, fs reflect.StructField, x exporter) fieldInfo {
 	ft := fs.Type
-	nullable := fd.Syntax() == pref.Proto2
+	nullable := fd.HasPresence()
 	isBytes := ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8
 	if nullable {
 		if ft.Kind() != reflect.Ptr && ft.Kind() != reflect.Slice {
@@ -290,9 +290,9 @@ func fieldInfoForScalar(fd pref.FieldDescriptor, fs reflect.StructField, x expor
 			rv.Set(conv.GoValueOf(v))
 			if isBytes && rv.Len() == 0 {
 				if nullable {
-					rv.Set(emptyBytes) // preserve presence in proto2
+					rv.Set(emptyBytes) // preserve presence
 				} else {
-					rv.Set(nilBytes) // do not preserve presence in proto3
+					rv.Set(nilBytes) // do not preserve presence
 				}
 			}
 		},
@@ -426,11 +426,25 @@ type oneofInfo struct {
 	which     func(pointer) pref.FieldNumber
 }
 
-func makeOneofInfo(od pref.OneofDescriptor, fs reflect.StructField, x exporter, wrappersByType map[reflect.Type]pref.FieldNumber) *oneofInfo {
-	fieldOffset := offsetOf(fs, x)
-	return &oneofInfo{
-		oneofDesc: od,
-		which: func(p pointer) pref.FieldNumber {
+func makeOneofInfo(od pref.OneofDescriptor, si structInfo, x exporter) *oneofInfo {
+	oi := &oneofInfo{oneofDesc: od}
+	if od.IsSynthetic() {
+		fs := si.fieldsByNumber[od.Fields().Get(0).Number()]
+		fieldOffset := offsetOf(fs, x)
+		oi.which = func(p pointer) pref.FieldNumber {
+			if p.IsNil() {
+				return 0
+			}
+			rv := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem()
+			if rv.IsNil() { // valid on either *T or []byte
+				return 0
+			}
+			return od.Fields().Get(0).Number()
+		}
+	} else {
+		fs := si.oneofsByName[od.Name()]
+		fieldOffset := offsetOf(fs, x)
+		oi.which = func(p pointer) pref.FieldNumber {
 			if p.IsNil() {
 				return 0
 			}
@@ -442,7 +456,8 @@ func makeOneofInfo(od pref.OneofDescriptor, fs reflect.StructField, x exporter,
 			if rv.IsNil() {
 				return 0
 			}
-			return wrappersByType[rv.Type().Elem()]
-		},
+			return si.oneofWrappersByType[rv.Type().Elem()]
+		}
 	}
+	return oi
 }
diff --git a/vendor/google.golang.org/protobuf/internal/impl/validate.go b/vendor/google.golang.org/protobuf/internal/impl/validate.go
index 39d62fd068..57de9cc85b 100644
--- a/vendor/google.golang.org/protobuf/internal/impl/validate.go
+++ b/vendor/google.golang.org/protobuf/internal/impl/validate.go
@@ -108,7 +108,7 @@ const (
 func newFieldValidationInfo(mi *MessageInfo, si structInfo, fd pref.FieldDescriptor, ft reflect.Type) validationInfo {
 	var vi validationInfo
 	switch {
-	case fd.ContainingOneof() != nil:
+	case fd.ContainingOneof() != nil && !fd.ContainingOneof().IsSynthetic():
 		switch fd.Kind() {
 		case pref.MessageKind:
 			vi.typ = validationTypeMessage
diff --git a/vendor/google.golang.org/protobuf/internal/impl/weak.go b/vendor/google.golang.org/protobuf/internal/impl/weak.go
index 575c988ccb..009cbefd1e 100644
--- a/vendor/google.golang.org/protobuf/internal/impl/weak.go
+++ b/vendor/google.golang.org/protobuf/internal/impl/weak.go
@@ -5,9 +5,10 @@
 package impl
 
 import (
-	"reflect"
+	"fmt"
 
 	pref "google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
 )
 
 // weakFields adds methods to the exported WeakFields type for internal use.
@@ -16,31 +17,58 @@ import (
 // defined directly on it.
 type weakFields WeakFields
 
-func (w *weakFields) get(num pref.FieldNumber) (_ pref.ProtoMessage, ok bool) {
-	if *w == nil {
-		return nil, false
-	}
-	m, ok := (*w)[int32(num)]
-	if !ok {
-		return nil, false
-	}
-	// As a legacy quirk, consider a typed nil to be unset.
-	//
-	// TODO: Consider fixing the generated set methods to clear the field
-	// when provided with a typed nil.
-	if v := reflect.ValueOf(m); v.Kind() == reflect.Ptr && v.IsNil() {
-		return nil, false
-	}
-	return Export{}.ProtoMessageV2Of(m), true
+func (w weakFields) get(num pref.FieldNumber) (pref.ProtoMessage, bool) {
+	m, ok := w[int32(num)]
+	return m, ok
 }
 
 func (w *weakFields) set(num pref.FieldNumber, m pref.ProtoMessage) {
 	if *w == nil {
 		*w = make(weakFields)
 	}
-	(*w)[int32(num)] = Export{}.ProtoMessageV1Of(m)
+	(*w)[int32(num)] = m
 }
 
 func (w *weakFields) clear(num pref.FieldNumber) {
 	delete(*w, int32(num))
 }
+
+func (Export) HasWeak(w WeakFields, num pref.FieldNumber) bool {
+	_, ok := w[int32(num)]
+	return ok
+}
+
+func (Export) ClearWeak(w *WeakFields, num pref.FieldNumber) {
+	delete(*w, int32(num))
+}
+
+func (Export) GetWeak(w WeakFields, num pref.FieldNumber, name pref.FullName) pref.ProtoMessage {
+	if m, ok := w[int32(num)]; ok {
+		return m
+	}
+	mt, _ := protoregistry.GlobalTypes.FindMessageByName(name)
+	if mt == nil {
+		panic(fmt.Sprintf("message %v for weak field is not linked in", name))
+	}
+	return mt.Zero().Interface()
+}
+
+func (Export) SetWeak(w *WeakFields, num pref.FieldNumber, name pref.FullName, m pref.ProtoMessage) {
+	if m != nil {
+		mt, _ := protoregistry.GlobalTypes.FindMessageByName(name)
+		if mt == nil {
+			panic(fmt.Sprintf("message %v for weak field is not linked in", name))
+		}
+		if mt != m.ProtoReflect().Type() {
+			panic(fmt.Sprintf("invalid message type for weak field: got %T, want %T", m, mt.Zero().Interface()))
+		}
+	}
+	if m == nil || !m.ProtoReflect().IsValid() {
+		delete(*w, int32(num))
+		return
+	}
+	if *w == nil {
+		*w = make(weakFields)
+	}
+	(*w)[int32(num)] = m
+}
diff --git a/vendor/google.golang.org/protobuf/internal/version/version.go b/vendor/google.golang.org/protobuf/internal/version/version.go
index cd84284c9d..774719e4ff 100644
--- a/vendor/google.golang.org/protobuf/internal/version/version.go
+++ b/vendor/google.golang.org/protobuf/internal/version/version.go
@@ -52,7 +52,7 @@ import (
 //	10. Send out the CL for review and submit it.
 const (
 	Major      = 1
-	Minor      = 21
+	Minor      = 22
 	Patch      = 0
 	PreRelease = ""
 )
diff --git a/vendor/google.golang.org/protobuf/proto/checkinit.go b/vendor/google.golang.org/protobuf/proto/checkinit.go
index d7c99235ec..3e9a6a2f66 100644
--- a/vendor/google.golang.org/protobuf/proto/checkinit.go
+++ b/vendor/google.golang.org/protobuf/proto/checkinit.go
@@ -12,6 +12,12 @@ import (
 
 // CheckInitialized returns an error if any required fields in m are not set.
 func CheckInitialized(m Message) error {
+	// Treat a nil message interface as an "untyped" empty message,
+	// which we assume to have no required fields.
+	if m == nil {
+		return nil
+	}
+
 	return checkInitialized(m.ProtoReflect())
 }
 
diff --git a/vendor/google.golang.org/protobuf/proto/encode.go b/vendor/google.golang.org/protobuf/proto/encode.go
index fa738a15da..456bfda478 100644
--- a/vendor/google.golang.org/protobuf/proto/encode.go
+++ b/vendor/google.golang.org/protobuf/proto/encode.go
@@ -74,19 +74,54 @@ type MarshalOptions struct {
 
 // Marshal returns the wire-format encoding of m.
 func Marshal(m Message) ([]byte, error) {
+	// Treat nil message interface as an empty message; nothing to output.
+	if m == nil {
+		return nil, nil
+	}
+
 	out, err := MarshalOptions{}.marshal(nil, m.ProtoReflect())
+	if len(out.Buf) == 0 && err == nil {
+		out.Buf = emptyBytesForMessage(m)
+	}
 	return out.Buf, err
 }
 
 // Marshal returns the wire-format encoding of m.
 func (o MarshalOptions) Marshal(m Message) ([]byte, error) {
+	// Treat nil message interface as an empty message; nothing to output.
+	if m == nil {
+		return nil, nil
+	}
+
 	out, err := o.marshal(nil, m.ProtoReflect())
+	if len(out.Buf) == 0 && err == nil {
+		out.Buf = emptyBytesForMessage(m)
+	}
 	return out.Buf, err
 }
 
+// emptyBytesForMessage returns a nil buffer if and only if m is invalid,
+// otherwise it returns a non-nil empty buffer.
+//
+// This is to assist the edge-case where user-code does the following:
+//	m1.OptionalBytes, _ = proto.Marshal(m2)
+// where they expect the proto2 "optional_bytes" field to be populated
+// if any only if m2 is a valid message.
+func emptyBytesForMessage(m Message) []byte {
+	if m == nil || !m.ProtoReflect().IsValid() {
+		return nil
+	}
+	return emptyBuf[:]
+}
+
 // MarshalAppend appends the wire-format encoding of m to b,
 // returning the result.
 func (o MarshalOptions) MarshalAppend(b []byte, m Message) ([]byte, error) {
+	// Treat nil message interface as an empty message; nothing to append.
+	if m == nil {
+		return b, nil
+	}
+
 	out, err := o.marshal(b, m.ProtoReflect())
 	return out.Buf, err
 }
diff --git a/vendor/google.golang.org/protobuf/proto/extension.go b/vendor/google.golang.org/protobuf/proto/extension.go
index 73f2431f1a..5f293cda86 100644
--- a/vendor/google.golang.org/protobuf/proto/extension.go
+++ b/vendor/google.golang.org/protobuf/proto/extension.go
@@ -9,28 +9,84 @@ import (
 )
 
 // HasExtension reports whether an extension field is populated.
-// It panics if ext does not extend m.
-func HasExtension(m Message, ext protoreflect.ExtensionType) bool {
-	return m.ProtoReflect().Has(ext.TypeDescriptor())
+// It returns false if m is invalid or if xt does not extend m.
+func HasExtension(m Message, xt protoreflect.ExtensionType) bool {
+	// Treat nil message interface as an empty message; no populated fields.
+	if m == nil {
+		return false
+	}
+
+	// As a special-case, we reports invalid or mismatching descriptors
+	// as always not being populated (since they aren't).
+	if xt == nil || m.ProtoReflect().Descriptor() != xt.TypeDescriptor().ContainingMessage() {
+		return false
+	}
+
+	return m.ProtoReflect().Has(xt.TypeDescriptor())
 }
 
 // ClearExtension clears an extension field such that subsequent
 // HasExtension calls return false.
-// It panics if ext does not extend m.
-func ClearExtension(m Message, ext protoreflect.ExtensionType) {
-	m.ProtoReflect().Clear(ext.TypeDescriptor())
+// It panics if m is invalid or if xt does not extend m.
+func ClearExtension(m Message, xt protoreflect.ExtensionType) {
+	m.ProtoReflect().Clear(xt.TypeDescriptor())
 }
 
 // GetExtension retrieves the value for an extension field.
 // If the field is unpopulated, it returns the default value for
-// scalars and an immutable, empty value for lists, maps, or messages.
-// It panics if ext does not extend m.
-func GetExtension(m Message, ext protoreflect.ExtensionType) interface{} {
-	return ext.InterfaceOf(m.ProtoReflect().Get(ext.TypeDescriptor()))
+// scalars and an immutable, empty value for lists or messages.
+// It panics if xt does not extend m.
+func GetExtension(m Message, xt protoreflect.ExtensionType) interface{} {
+	// Treat nil message interface as an empty message; return the default.
+	if m == nil {
+		return xt.InterfaceOf(xt.Zero())
+	}
+
+	return xt.InterfaceOf(m.ProtoReflect().Get(xt.TypeDescriptor()))
 }
 
 // SetExtension stores the value of an extension field.
-// It panics if ext does not extend m or if value type is invalid for the field.
-func SetExtension(m Message, ext protoreflect.ExtensionType, value interface{}) {
-	m.ProtoReflect().Set(ext.TypeDescriptor(), ext.ValueOf(value))
+// It panics if m is invalid, xt does not extend m, or if type of v
+// is invalid for the specified extension field.
+func SetExtension(m Message, xt protoreflect.ExtensionType, v interface{}) {
+	xd := xt.TypeDescriptor()
+	pv := xt.ValueOf(v)
+
+	// Specially treat an invalid list, map, or message as clear.
+	isValid := true
+	switch {
+	case xd.IsList():
+		isValid = pv.List().IsValid()
+	case xd.IsMap():
+		isValid = pv.Map().IsValid()
+	case xd.Message() != nil:
+		isValid = pv.Message().IsValid()
+	}
+	if !isValid {
+		m.ProtoReflect().Clear(xd)
+		return
+	}
+
+	m.ProtoReflect().Set(xd, pv)
+}
+
+// RangeExtensions iterates over every populated extension field in m in an
+// undefined order, calling f for each extension type and value encountered.
+// It returns immediately if f returns false.
+// While iterating, mutating operations may only be performed
+// on the current extension field.
+func RangeExtensions(m Message, f func(protoreflect.ExtensionType, interface{}) bool) {
+	// Treat nil message interface as an empty message; nothing to range over.
+	if m == nil {
+		return
+	}
+
+	m.ProtoReflect().Range(func(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool {
+		if fd.IsExtension() {
+			xt := fd.(protoreflect.ExtensionTypeDescriptor).Type()
+			vi := xt.InterfaceOf(v)
+			return f(xt, vi)
+		}
+		return true
+	})
 }
diff --git a/vendor/google.golang.org/protobuf/proto/merge.go b/vendor/google.golang.org/protobuf/proto/merge.go
index df72f98952..27ab1a686e 100644
--- a/vendor/google.golang.org/protobuf/proto/merge.go
+++ b/vendor/google.golang.org/protobuf/proto/merge.go
@@ -21,6 +21,9 @@ import (
 // It is semantically equivalent to unmarshaling the encoded form of src
 // into dst with the UnmarshalOptions.Merge option specified.
 func Merge(dst, src Message) {
+	// TODO: Should nil src be treated as semantically equivalent to a
+	// untyped, read-only, empty message? What about a nil dst?
+
 	dstMsg, srcMsg := dst.ProtoReflect(), src.ProtoReflect()
 	if dstMsg.Descriptor() != srcMsg.Descriptor() {
 		panic("descriptor mismatch")
diff --git a/vendor/google.golang.org/protobuf/proto/size.go b/vendor/google.golang.org/protobuf/proto/size.go
index a4e72bd9c0..11ba841464 100644
--- a/vendor/google.golang.org/protobuf/proto/size.go
+++ b/vendor/google.golang.org/protobuf/proto/size.go
@@ -18,6 +18,11 @@ func Size(m Message) int {
 
 // Size returns the size in bytes of the wire-format encoding of m.
 func (o MarshalOptions) Size(m Message) int {
+	// Treat a nil message interface as an empty message; nothing to output.
+	if m == nil {
+		return 0
+	}
+
 	return sizeMessage(m.ProtoReflect())
 }
 
diff --git a/vendor/google.golang.org/protobuf/reflect/protoreflect/proto.go b/vendor/google.golang.org/protobuf/reflect/protoreflect/proto.go
index 1b89bedabd..b669a4e761 100644
--- a/vendor/google.golang.org/protobuf/reflect/protoreflect/proto.go
+++ b/vendor/google.golang.org/protobuf/reflect/protoreflect/proto.go
@@ -22,8 +22,9 @@
 //
 // The protobuf descriptor interfaces are not meant to be implemented by
 // user code since they might need to be extended in the future to support
-// additions to the protobuf language. Protobuf descriptors can be constructed
-// using the "google.golang.org/protobuf/reflect/protodesc" package.
+// additions to the protobuf language.
+// The "google.golang.org/protobuf/reflect/protodesc" package converts between
+// google.protobuf.DescriptorProto messages and protobuf descriptors.
 //
 //
 // Go Type Descriptors
diff --git a/vendor/google.golang.org/protobuf/reflect/protoreflect/type.go b/vendor/google.golang.org/protobuf/reflect/protoreflect/type.go
index 41d560e738..5be14a7258 100644
--- a/vendor/google.golang.org/protobuf/reflect/protoreflect/type.go
+++ b/vendor/google.golang.org/protobuf/reflect/protoreflect/type.go
@@ -281,11 +281,19 @@ type FieldDescriptor interface {
 	// It is usually the camel-cased form of the field name.
 	JSONName() string
 
+	// HasPresence reports whether the field distinguishes between unpopulated
+	// and default values.
+	HasPresence() bool
+
 	// IsExtension reports whether this is an extension field. If false,
 	// then Parent and ContainingMessage refer to the same message.
 	// Otherwise, ContainingMessage and Parent likely differ.
 	IsExtension() bool
 
+	// HasOptionalKeyword reports whether the "optional" keyword was explicitly
+	// specified in the source .proto file.
+	HasOptionalKeyword() bool
+
 	// IsWeak reports whether this is a weak field, which does not impose a
 	// direct dependency on the target type.
 	// If true, then Message returns a placeholder type.
@@ -375,6 +383,11 @@ type FieldDescriptors interface {
 type OneofDescriptor interface {
 	Descriptor
 
+	// IsSynthetic reports whether this is a synthetic oneof created to support
+	// proto3 optional semantics. If true, Fields contains exactly one field
+	// with HasOptionalKeyword specified.
+	IsSynthetic() bool
+
 	// Fields is a list of fields belonging to this oneof.
 	Fields() FieldDescriptors
 
diff --git a/vendor/google.golang.org/protobuf/reflect/protoreflect/value.go b/vendor/google.golang.org/protobuf/reflect/protoreflect/value.go
index a352ed9e6c..f319810778 100644
--- a/vendor/google.golang.org/protobuf/reflect/protoreflect/value.go
+++ b/vendor/google.golang.org/protobuf/reflect/protoreflect/value.go
@@ -114,8 +114,8 @@ type Message interface {
 	// Mutable is a mutating operation and unsafe for concurrent use.
 	Mutable(FieldDescriptor) Value
 
-	// NewField returns a new value for assignable to the field of a given descriptor.
-	// For scalars, this returns the default value.
+	// NewField returns a new value that is assignable to the field
+	// for the given descriptor. For scalars, this returns the default value.
 	// For lists, maps, and messages, this returns a new, empty, mutable value.
 	NewField(FieldDescriptor) Value